This sounds very similar to the issue I had with mine. I am using HDDs though, not sure if that makes a difference.
I posted this topic in April 2022 trying to resolve the issue. I setup my system to reboot every morning which temporarily solved the issue for a little while…
I posted this topic in December 2022 when I could not get the HDDs to stay online for more than a few minutes at a time…
I subsequently solved the issue by getting in touch with Argon and they decided my Sata Board was faulty and replaced it which has fixed all the issues.
My advise would be to get in touch with Argon and see if they can do anything about it. You might have to wait for it to get worse before they can diagnose it as a hardware issue.